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TI-2023-00433 Aliases CVE-2023-0458

Spectre V1 Gadget in do_prlimit in the Linux Kernel

Priority LOW 25CWE-476Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
Denial of service
Confidentiality · integrity · availability
High · None · None
Fix status
Partial Red Hat: 19 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

A speculative pointer dereference problem exists in the Linux Kernel on the do_prlimit() function. The resource argument value is controlled and is used in pointer arithmetic for the 'rlim' variable and can be used to leak the contents. We recommend upgrading past version 6.1.8 or commit 739790605705ddcf18f21782b9c99ad7d53a8c11

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00726 54th percentileScored 2026-11-07
Fix Partial Red Hat: 8 advisoriesRed Hat: 19 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux Kernelup to 6.1.8—No fix listedCNA
  • Linux Kernel VendorLinux Affected up to 6.1.8 Fixed in — No fix listed CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*before 6.1.8VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*6.2 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*6.2 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*6.2 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:*6.2 rc4VulnerableLinux
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 6.1.8 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:* Versions 6.2 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:* Versions 6.2 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:* Versions 6.2 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:* Versions 6.2 rc4 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

Red Hat 8 advisories

  • RHSA-2024:0724 Released 2024-02-07 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-tools-libs-devel-4.18.0-372.91.1.el8_6
    • Red Hat Enterprise Linux BaseOS EUS (v.8.6) bpftool-4.18.0-372.91.1.el8_6, kernel-4.18.0-372.91.1.el8_6, kernel-abi-stablelists-4.18.0-372.91.1.el8_6 +19
    • Red Hat Virtualization 4 Hypervisor for RHEL 8 kernel-devel-4.18.0-372.91.1.el8_6, perf-4.18.0-372.91.1.el8_6
  • RHSA-2024:0575 Released 2024-01-30 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-tools-libs-devel-4.18.0-477.43.1.el8_8
    • Red Hat Enterprise Linux BaseOS EUS (v.8.8) bpftool-4.18.0-477.43.1.el8_8, kernel-4.18.0-477.43.1.el8_8, kernel-abi-stablelists-4.18.0-477.43.1.el8_8 +19
  • RHSA-2023:7077 Released 2023-11-14 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-513.5.1.el8_9
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-513.5.1.el8_9, kernel-4.18.0-513.5.1.el8_9, kernel-abi-stablelists-4.18.0-513.5.1.el8_9 +19
Show 5 more Red Hat advisories
  • RHSA-2023:6901 Released 2023-11-14 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt-4.18.0-513.5.1.rt7.307.el8_9, kernel-rt-core-4.18.0-513.5.1.rt7.307.el8_9, kernel-rt-debug-4.18.0-513.5.1.rt7.307.el8_9 +7
    • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-513.5.1.rt7.307.el8_9, kernel-rt-core-4.18.0-513.5.1.rt7.307.el8_9, kernel-rt-debug-4.18.0-513.5.1.rt7.307.el8_9 +9
  • RHSA-2023:4801 Released 2023-08-29 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.9.0) kernel-tools-libs-devel-5.14.0-70.70.1.el9_0
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) kernel-debug-devel-5.14.0-70.70.1.el9_0, kernel-debug-devel-matched-5.14.0-70.70.1.el9_0, kernel-devel-5.14.0-70.70.1.el9_0 +5
    • Red Hat Enterprise Linux BaseOS EUS (v.9.0) bpftool-5.14.0-70.70.1.el9_0, kernel-5.14.0-70.70.1.el9_0, kernel-abi-stablelists-5.14.0-70.70.1.el9_0 +14
  • RHSA-2023:4814 Released 2023-08-29 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time EUS (v.9.0) kernel-rt-5.14.0-70.70.1.rt21.141.el9_0, kernel-rt-core-5.14.0-70.70.1.rt21.141.el9_0, kernel-rt-debug-5.14.0-70.70.1.rt21.141.el9_0 +7
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) kernel-rt-5.14.0-70.70.1.rt21.141.el9_0, kernel-rt-core-5.14.0-70.70.1.rt21.141.el9_0, kernel-rt-debug-5.14.0-70.70.1.rt21.141.el9_0 +9
  • RHSA-2023:4377 Released 2023-08-01 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-284.25.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.25.1.el9_2, kernel-64k-devel-5.14.0-284.25.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.0.0-284.25.1.el9_2, kernel-5.14.0-284.25.1.el9_2, kernel-64k-5.14.0-284.25.1.el9_2 +29
    • Red Hat Enterprise Linux CRB (v. 9) kernel-tools-libs-devel-5.14.0-284.25.1.el9_2
  • RHSA-2023:4378 Released 2023-08-01 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux NFV (v. 9) kernel-rt-5.14.0-284.25.1.rt14.310.el9_2, kernel-rt-core-5.14.0-284.25.1.rt14.310.el9_2, kernel-rt-debug-5.14.0-284.25.1.rt14.310.el9_2 +11
    • Red Hat Enterprise Linux RT (v. 9) kernel-rt-5.14.0-284.25.1.rt14.310.el9_2, kernel-rt-core-5.14.0-284.25.1.rt14.310.el9_2, kernel-rt-debug-5.14.0-284.25.1.rt14.310.el9_2 +9

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2023:7077
Red Hat CodeReady Linux Builder EUS (v.8.6)Fixed RHSA-2024:0724
Red Hat CodeReady Linux Builder EUS (v.8.8)Fixed RHSA-2024:0575
Red Hat CodeReady Linux Builder EUS (v.9.0)Fixed RHSA-2023:4801
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2023:4377
Red Hat Enterprise Linux AppStream EUS (v.9.0)Fixed RHSA-2023:4801
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2023:7077
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2023:4377
Red Hat Enterprise Linux BaseOS EUS (v.8.6)Fixed RHSA-2024:0724
Red Hat Enterprise Linux BaseOS EUS (v.8.8)Fixed RHSA-2024:0575
Red Hat Enterprise Linux BaseOS EUS (v.9.0)Fixed RHSA-2023:4801
Red Hat Enterprise Linux CRB (v. 9)Fixed RHSA-2023:4377
Red Hat Enterprise Linux NFV (v. 9)Fixed RHSA-2023:4378
Red Hat Enterprise Linux RT (v. 9)Fixed RHSA-2023:4378
Red Hat Enterprise Linux Real Time (v. 8)Fixed RHSA-2023:6901
Red Hat Enterprise Linux Real Time EUS (v.9.0)Fixed RHSA-2023:4814
Red Hat Enterprise Linux Real Time for NFV (v. 8)Fixed RHSA-2023:6901
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)Fixed RHSA-2023:4814
Red Hat Virtualization 4 Hypervisor for RHEL 8Fixed RHSA-2024:0724
Not affected: 2 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux AppStream (v. 9)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-0458

References

Patch 2

Advisory 2

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences